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mmc: sdhci-esdhc-imx: support setting tuning start point

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The delay cells of some SoCs may have less delay per one cell,
for such SoCs, user could set the start delay cell point to bypass
the first a few meaningless tuning commands.

Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Dong Aisheng
2016-07-12 15:46:15 +08:00
committed by Ulf Hansson
parent ca8cc0fe0e
commit d87fc96636
2 changed files with 12 additions and 3 deletions
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include/linux/platform_data/mmc-esdhc-imx.h
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@@ -46,5 +46,6 @@ struct esdhc_platform_data {
bool support_vsel;
unsigned int delay_line;
unsigned int tuning_step; /* The delay cell steps in tuning procedure */
unsigned int tuning_start_tap; /* The start delay cell point in tuning procedure */
};
#endif /* __ASM_ARCH_IMX_ESDHC_H */